kissed someone and lost interest, feeling uncomfortable

a coworker of mine asked me out and i originally rejected them because we are coworkers and i didn’t want to pursue anything because i value my job and didn’t want anything to be awkward. yet i talked to them afterwards and decided to just give it a go, go on a date and see how it goes. we had just started talking and at a social event they asked to kiss me. i originally was like “…now? really?” but once again decided to just bite the bullet. i thought it’d be an innocent peck but was immediately turned off when they got on top of me and pretty much violently made out with me, tongue and everything. i was really uncomfortable but didn’t stop it.

a few days go by and they text me a bunch of paragraphs afraid that i’ll be “scared away” by their “true character”. we hadn’t even gone on a date yet. (??) so i just said i’m not mentally able to handle a relationship right now, which is true. they then texted me this giant paragraph about how they like the way i smell and attract people, and said they had a fantasy about giving me a blowjob. one of my friends said it was harassment but i didn’t say i was uncomfortable and didn’t stop the kiss so i don’t know what to label it as. i just overall feel really gross.

i want to stop talking to them but we’re coworkers and are in a lot of mutual groups so i’m just in a bad position.

i don’t know if it’s wrong of me to feel like this even though i didn’t stop the kiss and haven’t told them that i’m uncomfortable. i just was really turned off by it. way too much way too fast.